No purchase price was disclosed. D.A. employs 13 at the 30,000-square-foot Charlestown plant, molding covers and interior parts for Toyota Motor Corp. The firm does some thermoforming, but is primarily a custom molder. D.A. was founded in 1989 and was owned by Kojima Press Industry Co. Ltd. of Shimoichiba, Japan.

The acquisition gives Davisburg-based Corvac wheel liner work on the Toyota Sequoia SUV. The Sequoia was one of the few Toyota vehicles Corvac wasn’t working on, according to Corvac sales coordinator Jessica Hadley.

Toyota is Corvac’s largest customer, Hadley said in a Nov. 9 phone interview, but the firm also is increasing its work with Chrysler Group LLC. Corvac designs and produces wheel arch liners, engine under-covers and aerodynamic under-body shields. The company is owned by Humphrey Cos. LLC, a holding firm in Grandville, Mich., that owns three other industrial manufacturing companies.

Sales at Corvac are in line to total about $50 million in 2012, with 2013 sales expected to be close to $60 million, Hadley said. “Our business is really bouncing back,” she added.

Corvac employs a total of 250 at its headquarters and R&D center in Davisburg and at a manufacturing and engineering plant in Byron Center, Mich., and a manufacturing plant in Morgantown, Ky.